Specifies that words reserved in IBM COBOL V1.00 are to be regarded as reserved words, and changes the behavior of certain features to be compatible with that COBOL system. 
	 
  
 
	  
		Note: This directive is supported for native COBOL only. 
      
 
 
	  
 
	 Syntax:
 
		 
		>>-.---.-.----.--PC1-----------------------><
   +-/-+ +-NO-+
 
	 Properties:
 
		 
		 
		
 
			  
			  
			  
				 
				  | Default: | NOPC1 (Dialect) | 
 
				 
				  | Phase: | Syntax check | 
 
				 
				  | $SET: | Initial | 
 
			 
 
		  
 
 
	 Dependencies:
 
		 
		PC1 sets DEFAULTBYTE"0" and ACCEPTREFRESH immediately. 
		
 
	 
Comments:
This directive is synonymous with the IBM-MS and MS"1" directives.